A flaw was found in React Router. Applications using React Router that allow open redirects are vulnerable to Cross-Site Scripting (XSS). A remote attacker could craft a malicious link that, when clicked by a user, redirects them to an unexpected external site or exploits an XSS vulnerability, potentially leading to information disclosure or unauthorized actions.

React Router is a router for React. In versions 6.30.2 through 6.30.4 and 7.9.6 through 7.12.0, applications that allow open redirects are vulnerable to XSS. An attacker could craft a malicious link that redirects users to an unexpected external site or that exploits an XSS vector.This issue has been fixed in version 7.13.0.

React Router: Open redirect leading to XSS